#### S.H.O.D.A.N.

##### world

Hi, Slidey here.

I just wanted to let everybody know about Wolfram Alpha. It's pretty amazing for mathematics purposes. It incorporates Mathematica but entering queries is easier, and it extends beyond maths. I imagine it should be quite useful for HSC Maths.

Here's an example of solving the limit of ln(x)/x as x -> infinity:

http://www94.wolframalpha.com/input/?i=lim+x->infinity+ln(x)/x

Click 'show steps' to see how Alpha solved it using l'Hospital's rule.

Here's the derivative of ln((sin(x^2)-8ln(2/x)^-1)), including steps and two plots at different scales:

http://www94.wolframalpha.com/input/?i=derivative+ln((sin(x^2)-8ln(2/x)^-1))

Perhaps this thread could be stickied? Ideally this thread would be replicated on all the forums (General, 2U, 3U) as Alpha is a perfect aid for figuring out how to do many questions because it offers working (many books don't offer working in answers, and past exams usually don't come with answer). I don't see any mods here anymore, though, which is sad.

I just wanted to let everybody know about Wolfram Alpha. It's pretty amazing for mathematics purposes. It incorporates Mathematica but entering queries is easier, and it extends beyond maths. I imagine it should be quite useful for HSC Maths.

Here's an example of solving the limit of ln(x)/x as x -> infinity:

http://www94.wolframalpha.com/input/?i=lim+x->infinity+ln(x)/x

Click 'show steps' to see how Alpha solved it using l'Hospital's rule.

Here's the derivative of ln((sin(x^2)-8ln(2/x)^-1)), including steps and two plots at different scales:

http://www94.wolframalpha.com/input/?i=derivative+ln((sin(x^2)-8ln(2/x)^-1))

Perhaps this thread could be stickied? Ideally this thread would be replicated on all the forums (General, 2U, 3U) as Alpha is a perfect aid for figuring out how to do many questions because it offers working (many books don't offer working in answers, and past exams usually don't come with answer). I don't see any mods here anymore, though, which is sad.

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